Datacenter Sites in Blaine County, Montana
Blaine County has 44 scored datacenter candidate sites averaging 54.2/100 DC Readiness, with a catalogued aggregate of 850 MW. FEMA rates local natural-hazard risk as "Very Low". The county has a datacenter tax incentive on record.
At a glance
Blaine County, Montana has 44 scored datacenter candidate sites averaging 54.2/100 DC Readiness, roughly in line with the Montana average of 54.3. It ranks 20th of 55 Montana counties by number of sites and 31st by average score. The top-scoring site is HARLEM at 63.6/100.
Site-selection context for Blaine County
Incentive detail: New/expanding industry tax abatement available for DC construction.
How does Blaine County compare with other counties in Montana?
By number of scored sites, Blaine County ranks 20th of the 55 Montana counties with a county page, holding 1.7% of the state's 2,542 sites. Its average DC Readiness of 54.2/100 ranks 31st in the state and is roughly in line with the national average of 53.0. Nationally it has the 868th-largest site inventory of 2,964 counties with five or more sites. 0 sites score 70 or higher and 11 score 55 or higher.
What types of datacenter sites are in Blaine County?
Industrial sites are the most common (22, 50% of the county's inventory), followed by substation-adjacent (12) and federal excess (8). Site type reflects how the parcel was identified — next to a substation, on a former mine or brownfield, on industrial or federal excess land — and is scored on the same 14 factors either way.
What are power cost, hazard, water and fiber conditions in Blaine County?
Industrial electricity averages 6.91¢/kWh and commercial 8.26¢/kWh. FEMA's National Risk Index rates the county "Very Low" (12). WRI water stress is medium-high. 3 fiber providers report service in the county. The climate runs 400 cooling degree days a year with a mean temperature of 42°F. Land is valued around $849 an acre.
By site type
Top datacenter sites in Blaine County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| HARLEM | Substation-Adjacent | 230 kV | 300 MW | 1.1 yrs | 63.6 |
| OZ Blaine | Greenfield | — | — | 1.1 yrs | 61.4 |
| CHINOOK | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 57.3 |
| UNKNOWN208255 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 57.3 |
| UNKNOWN208250 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 57.2 |
| UNKNOWN208261 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 57.0 |
| UNKNOWN208263 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 57.0 |
| UNKNOWN208256 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 56.9 |
| UNKNOWN208252 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 56.4 |
| UNKNOWN208253 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 56.3 |
| UNKNOWN208258 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 55.9 |
| UNKNOWN208259 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 54.0 |
| UNKNOWN208260 | Substation-Adjacent | 69 kV | 50 MW | 1.1 yrs | 53.8 |
| Milk River | Federal Excess | — | — | 1.1 yrs | 53.5 |
| Chinook Eagles Club | Industrial | — | — | 1.1 yrs | 53.3 |
| McGuire Motel | Industrial | — | — | 1.1 yrs | 53.3 |
| Blaine County Courthouse | Industrial | — | — | 1.1 yrs | 53.3 |
| Mine Site | Former Mine | — | — | 1.1 yrs | 53.3 |
| City of Harlem | Industrial | — | — | 1.1 yrs | 53.3 |
| Nissen Property | Industrial | — | — | 1.1 yrs | 53.3 |
| Bikini Coffee Corner | Industrial | — | — | 1.1 yrs | 53.3 |
| Miller Property | Industrial | — | — | 1.1 yrs | 53.3 |
| Caroline Brown's Market | Industrial | — | — | 1.1 yrs | 53.3 |
| Milk River | Federal Excess | — | — | 1.1 yrs | 53.3 |
| Blaine County Road Department | Industrial | — | — | 1.1 yrs | 53.3 |
Every scored site in Blaine County
All 44 sites, best first.
- HARLEM · 63.6
- OZ Blaine · 61.4
- CHINOOK · 57.3
- Substation-Adjacent site · 5b14b3c3 · 57.3
- Substation-Adjacent site · 6f2d4696 · 57.2
- Substation-Adjacent site · 09be4555 · 57.0
- Substation-Adjacent site · bdecf43e · 57.0
- Substation-Adjacent site · 78e907ff · 56.9
- Substation-Adjacent site · 2f78262f · 56.4
- Substation-Adjacent site · 129ad6d1 · 56.3
- Substation-Adjacent site · 313b9092 · 55.9
- Substation-Adjacent site · ee711990 · 54.0
- Substation-Adjacent site · 572cc068 · 53.8
- Milk River · cfd0230e · 53.5
- Chinook Eagles Club · 53.3
- McGuire Motel · 53.3
- Blaine County Courthouse · 53.3
- Mine Site · 339515bc · 53.3
- City of Harlem · 53.3
- Nissen Property · 53.3
- Bikini Coffee Corner · 53.3
- Miller Property · 53.3
- Caroline Brown's Market · 53.3
- Milk River · 7a20bbb9 · 53.3
- Blaine County Road Department · 53.3
- Former Equity Co-Op · 53.3
- Milk River · c984639a · 53.2
- Runway Homes · 53.1
- Milk River · 9599fc74 · 53.1
- Bo Horn Weasel House · 53.1
- Gordon Gray House · 53.0
- Agency Dump Site · 53.0
- Old Agency Landfill · 53.0
- Milk River · d5eb7180 · 53.0
- Sue Tipton House · 52.9
- Sacred Heart Catholic Church · 52.9
- Milk River · 84c86b92 · 52.8
- Snake Butte Quarry · 52.5
- Milk River · f1558379 · 52.4
- People's Creek Former Cattle Dip Operation · 52.2
- Snake Butte Rock Quarry · 52.0
- DWP - FT BELKNAP IRRIGATION PROJECT · 8497d55c · 51.5
- Lodge Pole Community Hall · 50.9
- Old Lodge Pole Elementary School · 50.9
Blaine County datacenter FAQ
How many datacenter sites are in Blaine County?
44 scored datacenter candidate sites, averaging 54.2/100 DC Readiness. That is the 20th-most of 55 Montana counties with five or more sites.
What is the highest-scoring datacenter site in Blaine County?
HARLEM scores 63.6/100 DC Readiness, the highest of the 44 scored sites in Blaine County (a substation-adjacent site).
Does Blaine County offer datacenter tax incentives?
New/expanding industry tax abatement available for DC construction.
What is the natural-hazard risk in Blaine County?
FEMA's National Risk Index rates Blaine County as "Very Low" (score 12).
What are industrial electricity rates in Blaine County?
Average industrial electricity is 6.91¢/kWh and commercial is 8.26¢/kWh in Blaine County.
More in Montana
- All datacenter sites in Montana· 2,542 sites
- Operating datacenters in Montana
- Electric substations in Montana
- Broadwater County· 144 sites · avg 52.1
- Yellowstone County· 140 sites · avg 59.2
- Flathead County· 121 sites · avg 52.4
- Cascade County· 114 sites · avg 53.3
- Missoula County· 107 sites · avg 57.3
- Richland County· 107 sites · avg 54.7
- Industrial sites in Montana
- Substation-Adjacent sites in Montana
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published November 12, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “Datacenter candidate sites in Blaine County, Montana”, https://gridcensus.com/datacenter-sites/montana/blaine-county (data as of November 12, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for Blaine County, Montana is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.